JOURNAL OF MATERIALS SCIENCE
·
2024
·
IF 3.5
Li Congcong,Xu Lulu,Pan Xueer,Chen Xinru,Li Xiaobing,Wu Mian
Intelligent materials demonstrate promising applications in switchable oil/water separations. A stearic acid (SA) hydrophobically modified SiO 2 coating (SA/SiO 2 ) with switchable wettability was developed by simply spraying. The SA/SiO 2 coating with micro-nanostructure showed excellent superhydrophobicity with water contact angle (WCA) and oil contact angle (OCA) of 158.7° and 0°, respectively. When the SA/SiO 2 coating was contacted with ammonia, it showed excellent superhydrophilicity, with WCA and underwater oil contact angle of 0° and 155.4°, respectively. After heating treatment, the SA/SiO 2 coating returned to superhydrophobicity. Through wettability switching, the prepared SA/SiO 2 coating could be applied for on-demand separation of oil/water/oil ternary mixtures as well as various water-in-oil emulsions and oil-in-water emulsions, and the separation efficiency of oil-in-water emulsion could reach up to 99.97%, accompanied by a high flux at the same time. More importantly, the SA/SiO 2 coating exhibited significant robustness and excellent reusability, which maintained a superior separation efficiency of over 99.80% after 10 cycles emulsion separation, suggesting its promising potential for oily wastewater treatment. The simple and environmentally friendly coating preparation method as well as easy implementation of response conditions and short switching time provide a reference for the preparation of intelligent response oil/water separation materials. Graphical abstract
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Biomass Conversion and Biorefinery
·
2024
·
IF 3.5
Mao Wenlong,Yao Zheng,Zhang Hua,Liao Huiyun,Li Jiang,Xue Dong,Yuan Guangxiang,Xu Baoming,Dou Kunpeng,Sheng Shijie,Xu Chao,Pang Junran,Tan Xiaoyan,Chi Bo,Xiong Dangan
On the basis of the relationship between the composition of the reconstituted cut stems and their functional positioning in the leaf formulation, this study improves the proportion of high-quality tobacco products by investigating the material basis of the effect of reconstituted cut stems on the quality of cigarette products, by characterizing the starch content, physicochemical properties, and characteristic structures of different components in tobacco products. The results showed that the starch content in reconstituted cut stems (4.93 ± 0.27%) was between high-quality tobacco leaves (4.48 ± 0.17%) and cut stems (5.13 ± 0.18%), indicating that the reduction of starch content during the processing of reconstituted cut stems is more conducive to the high-value treatment of reconstituted cut stems. At the same time, through the evaluation of the physico-chemical properties and multi-scale structural characteristics of starch particles, it was found that the starch of the reconstituted cut stems has a rock-like particle structure, and the short-range ordering on the surface increases, forming more ordered structural domains. In addition, the processed reconstituted cut stems increase the crystallinity of the starch. It also exhibits the typical B-type crystalline structure of starch, with stronger molecular chain interactions and high crystalline ordered arrangement. This study will provide technical guidance and theoretical support for improving the quality of reconstituted cut stems products, improving the bioavailability of tobacco products, reducing raw material costs, and effectively reducing the starch content of tobacco in the development of tobacco products.
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Communications Biology
·
2024
·Vol. 7
·期 1
·1-14
·
IF 5.2
Tan Chao,Li Suxin,Song Jia,Zheng Xianfu,Zheng Hao,Xu Weichang,Wan Cui,Zhang Tan,Bian Qiang,Men Shuzhen
Auxins and their analogs are widely used to promote root growth, flower and fruit development, and yield in crops. The action characteristics and application scope of various auxins are different. To overcome the limitations of existing auxins, expand the scope of applications, and reduce side effects, it is necessary to screen new auxin analogs. Here, we identified 3,4-dichlorophenylacetic acid (Dcaa) as having auxin-like activity and acting through the auxin signaling pathway in plants. At the physiological level, Dcaa promotes the elongation of oat coleoptile segments, the generation of adventitious roots, and the growth of crop roots. At the molecular level, Dcaa induces the expression of auxin-responsive genes and acts through auxin receptors. Molecular docking results showed that Dcaa can bind to auxin receptors, among which TIR1 has the highest binding activity. Application of Dcaa at the root tip of the DR5:GUS auxin-responsive reporter induces GUS expression in the root hair zone, which requires the PIN2 auxin efflux carrier. Dcaa also inhibits the endocytosis of PIN proteins like other auxins. These results provide a basis for the application of Dcaa in agricultural practices.
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PubMed
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 4
·1-13
·
IF 5.3
Wu Qianyue,Yang Beiying,Wang Yutang,Xiong Yanyan,Zhang Jinhua,Wen Yangping,Rajkovic Andreja
An accurate, sensitive, low-cost, portable, and easy-to-use method for the quantitative detection of Clostridium perfringens (Cp), a zoonotic pathogen widely found in nature and capable of spreading through contaminated food or environments, is essential for epidemiology, prevention, and diagnostics. Here, we have designed a smartphone-based electrochemical DNA biosensor, which utilizes carboxyl-functionalized multi-walled carbon nanotubes (COOH-MWCNTs) as the substrate, L-cysteine (L-Cys) as the linker, and a synergistic modification of the bioelectrode with gold nanoparticles (AuNPs) and polyamidoamine dendrimers (PAMAM). This design enables highly sensitive, low-cost, label-free, and portable detection of the cpb2 gene in Cp. The sensor not only enhances detection performance but also improves convenience and practicality. Differential pulse voltammetry (DPV) was used to monitor the electrochemical signal response to changes in target DNA concentration, enabling the tracking of the DNA hybridization process. Under optimized conditions, the biosensor exhibited a linear detection range from 10⁻ 14 to 10⁻⁸ M, with a detection limit of 1.5 fM. It demonstrated excellent selectivity for the cpb2 gene and was successfully applied to detect variations in cpb2 gene content in wastewater and fecal DNA samples. Compared with the traditional method, the detection time of this method is short, the operation of professional and technical personnel is not required, the instrument is small and portable, and the single detection cost is significantly reduced. This study provides a new strategy for the rapid, portable, and highly sensitive detection of bacterial toxin genes in livestock and aquaculture. Graphical
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2012
·Vol. 403
·期 3
·877-884
·
IF 3.778
Diao Chun-Peng,Wei Chao-Hai
A rapid, sensitive and environmentally friendly method for the analysis of 14 anilines in water samples by dispersive liquid–liquid microextraction based on solidification of floating organic drop (DLLME-SFO) prior to gas chromatography–mass spectrometry (GC-MS) was developed and optimized. In the proposed method, cyclohexane was used as the extraction solvent as its toxicity was much lower than that of the solvent usually used in dispersive liquid–liquid microextraction (DLLME). In the optimized conditions, the method exhibited good analytical performance. Based on a signal-to-noise ratio of 3, limits of detection for anilines were in the range of 0.07 to 0.29 μg L −1 , and the linear range was 0.5–200 μg L −1 with regression coefficients ( r
2 ) higher than 0.9977. It was efficient for qualitative and quantitative analysis of anilines in water samples. The relative standard deviations varied from 2.9 to 8.6 % depending on different compounds indicating good precision. Tap water and river water were selected for evaluating the application to real water samples. The relative recoveries of anilines for the two real samples spiked with 10 μg L −1 anilines were in the scope of 78.2–114.6 % and 77.3–115.6 %, respectively.
Flow diagram of DLLME-SFO
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CHROMATOGRAPHIA
·
2012
·Vol. 75
·期 9
·521-526
·
IF 1.195
Zhou Xingqin,Qin Xiaofeng,Cao Guoxian,Zhang Jiankang
Neurotransmitters are the chemical messengers of the brain. Many neurodegenerative diseases of the central nervous system are related to abnormal neurotransmitter activity. Pyrroloquinoline quinine (PQQ) has previously been shown to be a promising candidate for preventing cognitive deficit in neurodegeneration. To investigate whether PQQ can modulate the levels of brain neurotransmitter amino acids, a rapid and reliable ion-pair liquid chromatographic method was established and validated for the analysis of PQQ in reaction mixtures containing specific neurotransmitter amino acids. The reaction mixtures were separated on an amethyst C18-P reverse-phase column with 35:65 (v/v) acetonitrile:20 mM potassium dihydrogen phosphate, pH 5.5, containing 20 mM tetrabutyl ammonium bromide as mobile phase at a flow rate of 0.8 mL min −1 . The validated method was applied successfully to study the chemical kinetics of PQQ reactions with five neurotransmitter amino acids. Order of reaction n , rate constant k , and activation energy E
a values for the reactions were calculated. This work provides important information for studying the possible protective mechanisms of PQQ in neurodegenerative diseases. Furthermore, the simplicity of this method combined with its sensitivity and reliability make it a novel contribution in the field of neurotransmitter research.
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Food Analytical Methods
·
2024
·
IF 2.6
Liu Yongjie,Wang Jiayu,Liu Sunan,Li Jing,Xiang Qian,Yang Zaiyue,Zhu Ling
Escherichia coli , as a prevalent foodborne pathogen, can harm people health seriously. Hence, developing the effective methods for E. coli determination is vital. In the paper, a convenient hybridization ratiometric fluorescent probe was constructed for the prompt determination of E. coli based on red emissive gold nanoclusters (AuNCs) and blue carbon dots (bCDs). The relevant experimental conditions were systematically optimized including copper concentration, incubation temperature, and time, in order to obtain the optimal results. There existed a strong linear relationship between the fluorescence intensity ratios ( I 630 / I 450 ) and the concentrations of E. coli for both AuNCs and bCDs. Based on the determination, it was found that the linear concentration range spanned from 10 3 to 10 7 CFU mL −1 , with a low limit of detection (LOD) of 120 CFU mL −1 . This method based on the mechanism of copper cocatalysis presents a sensitive and convenient strategy for E. coli determination, and has a promising future in the field of food safety.
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AAPS PHARMSCITECH
·
2025
·Vol. 26
·期 3
·1-18
·
IF 4
Han Jiawei,Sun Wen,Yao Yongxu,Li Shuo,Yue Zhimin,Fang Weitao,Liu Xiaoqian,Wang Jue,Chen Jiaxin
Flavonoids are a large class of compounds with a variety of biological activities. Nevertheless, their therapeutic application remains limited due to the generally low water solubility. In the present study, an integrated approach was provided to guide the design of flavonoid co-amorphous systems co-formed with piperine (PIP). Firstly, 7 flavonoid compounds showed good miscibility with PIP from 13 flavonoid candidates. Then, molecular dynamics simulation confirmed hydrogen bond formation between 5 flavonoid compounds (i.e., BAI, HES, ISO, NAR and KAE) and PIP. Herein, 5 flavonoid compounds were successfully co-amorphized with PIP by the melting and quench cooling method, which were proved via PLM, PXRD and DSC measurements. FTIR results showed the potential hydrogen bond interactions between -OH of flavonoid molecules and C = O of PIP molecule in the formed co-amorphous systems, which were consistent with RDF analyses in molecular models. For dissolution tests, 4 co-amorphous systems (i.e., BAI-PIP CM, HES-PIP CM, ISO-PIP CM and NAR-PIP CM) appeared abnormally reduced dissolution compared to their original crystalline counterparts arising from the formation of gels during dissolution, while only KAE-PIP CM displayed significantly enhanced dissolution (5.83-fold of crystalline KAE at 12 h) with long-time supersaturated concentration. Meanwhile, KAE-PIP CM kept physically stable at least 3 months under 25°C and 40°C conditions, and possessed excellent physical stability over individual amorphous components, which was attributed to the stronger intermolecular interaction by higher binding energy analysis. Therefore, this study provides a design strategy to guide the screening of flavonoid co-amorphous systems through combining theory-model-experiment techniques. Graphical
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JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 23
·10248-10263
·
IF 3.5
Zhu Chuanren,Zhang Tong,Su Qing,Wei Zhimei,Wang Xiaojun,Long Shengru,Zhang Gang,Yang Jie
Films with low dielectric constants have broad prospective applications in microelectronic devices. In this study, octavinyloctasilasesquioxane (POSS) was grafted with fluorinated long carbon chains on its eight vertices by clicking reaction. The successful synthesis of fluorinated POSS (F-POSS) was confirmed by NMR, FT-IR, and XPS analyses. Then, the F-POSS/poly (arylene sulfide sulfone) (F-POSS/PASS) composite films were fabricated via solution casting. When 15 wt.% of F-POSS was added, the dielectric constant of the F-POSS/PASS film at 1 MHz decreased from 3.52 to 2.65, while the Tan δ value dropped from 1.18*10 –2 to 9.32*10 –3 , respectively. The developed F-POSS/PASS film showed excellent hydrophobicity (water contact angle of 120.3°) which was attributed to the fluorinated long carbon chains. In addition, the optimized F-POSS/PASS film also exhibited good mechanical properties (tensile strength 66.87 MPa), promising thermal stability, and flame-retardant property. Given the above-mentioned excellent properties, the F-POSS/PASS composite films will have great potential in the fabrication of microelectronic devices. Graphical abstract
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2024
·Vol. 42
·期 10
·1610-1618
·
IF 4.1
Chen Xin-Yu,Fu Yu-Bing,Yan Xue-Ling,Liu Lan
Elastomers with high strength and toughness, excellent self-healing properties, and biocompatibility have broad application prospects in wearable electronics and other fields, but preparing it remains a challenge. In this work, we propose a highly adaptable strategy by introducing the small molecule crosslinking agent of triethanolamine (TEA) to the poly thioctic acid (PTA) chains and preparing the PA x E y elastomers using a simple synthesis step. This strategy stabilizes the PTA chains by constructing multiple non-covalent cross-linked dynamic networks, endowing materials with excellent strength and toughness (tensile strength of 288 kPa, toughness of 278.2 kJ/m 3 ), admirable self-healing properties (self-healing efficiency of 121.6% within 7 h at 70 °C), and good biocompatibility. The PA x E y elastomers can also be combined with MWNTs to become flexible strain sensors, which can be used to monitor human joint movements with high sensitivity, repeatable responses, and stability.
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Nature Sustainability
·
2024
·
IF 25.7
Wang Ruimin,Yang Shouzhi,Wang Mengfei,Zhou Yan,Li Xvelian,Chen Wei,Liu Wanshan,Huang Yida,Wu Jiao,Cao Jing,Feng Lei,Wan Jingjing,Wang Jiayi,Huang Lin,Qian Kun
Over a billion people across the world experience a high rate of missed disease diagnosis, an issue that highlights the need for diagnostic tools showing increased accuracy and affordability. In addition, such tools could be used in ecologically fragile and energy-limited regions, pointing to the need for developing solutions that can maximize health gains under limited resources for enhanced sustainability. Metabolic diagnosis holds promise but faces challenges due to the applicability of biospecimens and limited robustness of analytical tools. Here we present a diagnostic method coupling dried serum spots (DSS) and nanoparticle-enhanced laser desorption/ionization mass spectrometry (NPELDI MS). Our approach allows diagnosis of multiple cancers within minutes at affordable cost, environmental friendliness, serum-equivalent precision and user-friendly protocol. Our assessment shows that the implementation of this tool in less-developed regions could reduce the estimated proportion of undiagnosed cases of colorectal cancer from 84.30% to 29.20%, gastric cancer from 77.57% to 57.22% and pancreatic cancer from 34.56% to 9.30%—an overall reduction in the range of 20.35–55.10%. This work provides insights into delivering more sustainable metabolic diagnosis with maximum health gains.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2017
·Vol. 28
·期 24
·18542-18550
·
IF 2.019
Wu Huating,Ding Xingeng,Li Wenqi,Ren Chunrong,Yang Hui
In this study, a magnetic Fe 3 O 4 /SiO 2 /BiOBr composite photocatalyst was controllably synthesized a PVP-assisted solvothermal method. The Fe 3 O 4 /SiO 2 /BiOBr composites are composed of many three-dimensional (3D) flower-like BiOBr microspheres loaded with many spherical Fe 3 O 4 particles. The formation mechanism and effect of PVP’s concentration on the products were investigated and proposed. Experimental results showed that PVP might act as a potential crystal plane inhibitor in the system as well as the stabilizer on the surface of BiOBr nanoplates. The Fe 3 O 4 /SiO 2 /BiOBr displayed high photocatalytic activity for the degradation of RhB under visible light irradiation, after which it can be easily recovered by applying an external magnetic field. Moreover, the as-prepared photocatalyst exhibited excellent stability and reusability in the cycled experiments.
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